package cn.tedu.sp02.item.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.service.ItemService;
import cn.tedu.web.util.JsonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Random;

@RestController
@Slf4j
public class ItemController {
    //注入service
    @Autowired
    private ItemService itemService;

    //注入端口号
    //是为了后面测试集群服务器负载均衡
    @Value("${server.port}")
    private int port;

    // 获取订单中的商品列表
    @GetMapping("/{orderId}")
    public JsonResult<List<Item>> getItems(@PathVariable String orderId) throws InterruptedException {
        List<Item> items = itemService.getItems(orderId);
        log.info("获取商品列表， orderId="+orderId);

        // 随机延迟
        if (Math.random() < 0.9) {
            //随机延迟时长
            int t = new Random().nextInt(5000);
            System.out.println("延迟： "+t);
            Thread.sleep(t);
        }

        return JsonResult.ok().msg("server.port="+port).data(items);
    }

    // 减少商品库存
    // @RequestBody - 完整地接收请求协议体数据
    @PostMapping("decreaseNumber")
    public JsonResult<?> decreaseNumber(@RequestBody List<Item> items) {
        itemService.decreaseNumber(items);
        return JsonResult.ok().msg("减少商品库存成功");
    }
}
